Stock-tank heater.



G. W. BOTHAM.

STOCK TANK HEATER. APPLICATION FILED on 2. 1916.

1,234,695 Patented July 24, 1917.

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Application nea- October 2,1916; serial Ira-123,444.

To all whom it may concern:

Be it known that I, GEORGE W. BOTHAM, citizen of the United States, residing at Madison, in the county of Dane and State of Wisconsin, have invented. certain new and useful Improvements in Stock-Tank Heaters, of which the following is a specifi cation.

My invention relates to stock tank heaters; and the objects of my invention are- First,-to provide a casing that will expose the greatest proportion of heating surface to the water in the tank;

Second-to afford convenient means for removing the grate and ash pan;

Third-to cause all air entering the heater to pass through the fuel, and

Fourth-to eliminate pipe dampers by means of a telescoping smoke stack.

I attain these objects by the mechanism shown in the accompanying drawings in which- Figure 1 is a plan with top removed.

Fig. 2 is a vertical cross-section on line AB, Fig. 1.

Fig. 3 is a side elevation partly in section.

Fig. 4 is a plan of a portion of the top plate.

Similar numerals refer to similar parts throughout the several views.

The casing, 1, is a metallic water tight box open on top, a distance from the front end. On the inside a partition, 2, is provided, secured to the two sides of the casing and extending downward approximately two-thirds the distance to the bottom, thence turning inward, forming a ledge, 3. Upon said ledge, 3, is disposed the front end of a grate, 1; cotter pins, 5, securing the grate to the ledge. The grate, 4:, comprises a series of parallel bars and apertures connected at the front end by the band, 6, and at the rear end by the margin, 7, the fire wall, 8, and ash pit wall, 9. The elements, 4, 5, 6, 7, 8, and 9, being an integral casting, constitute an important part of my invention, and provide a very convenient means for cleaning the fire, in view of the fact that by inserting a hook between the grate bars and under the margin, 7, the grate can be raised and dropped, completely removing all ashes from the fuel and depositing same in the ash pan, 10. The said pan can be taken out of the casing by raising the grate and section, 11, of the top plate.- The top platecomp'lete, 1

sections 11,12, and damper door, 13, the sect-ions 11 and'12'positioned on-top cf the,

' by depending flanges 23 or equivalent convenient means; and the damper door resting upon the top of the case. The said damper, between the hinge member on one side and the adjacent lug on the plate, 11, is provided with a spring, 14:, surrounding the pivot bolt, 15, causing sufficient friction between the hinge members to hold the damper in the most minute adjustment. Equidistant from the back edge and the sides of the top plate member, 12, is located a pipe flange, 16, and a smoke stack, 17 extends upward from the outside thereof; and inside of said pipe flange is disposed, in sliding relation, a draft controlling pipe, 18, with a flange 23 projecting outward around the top thereof, loosely fitting the inside of the stack. The pipe, 18, is provided with the rod, 19, secured thereto near the bottom and passing upward through the top plate with a chain 25 attached for holding in the desired position by connecting a draft as indicated by arrows, 20, 21,

Fig. 3; and when the fire issufficiently under way lower draft pipe, 18 to desired point producing currents, 20, 22, Fig. 3. Another advantage attained in stock tank heater efficiency is the fact that pipe, 18, has a dead air space between it and the outer pipe, 17 The gases from thefire more readily heat the inner pipe in cold weather and thereby facilitate the starting of the fire, and furthermore, the pipe being surrounded by hot gases, a much better draft can be maintained.

I claim- 1. In a device of the kind described in combination with a water tight casing; a partition plate adjacent one end; a ledge at the lower end of the plate adapted to support a grate; a grate comprisingv bars; fire and ash pit walls; a plurality of cotter pins hingedly securing said grate to said ledge allowing the grate to be raised and dropped for cleaning the fire; a top plate covering the casing; a smoke stack extending upward from the cover; a slidable draft depending therefrom; means for holding the draft pipe in the desired position.

2. In a device of the kind described in combination with a water tight casing, a partition wall; a grate resting on the partition wall; a top plate or cover comprising three sections of unequal lengths; a damper door being the smallerof the sec tions hingedly secured to the contiguous 10 section; a spring disposed between the hinge ture in the presence of two subscribing 15 witnesses:

GEO. W. BOTHAM. Witnesses:

A. J. BUENZLI, THEO. A. WALLER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

